Relations Test ...

A $$\times$$ (B - C) =

If A $$=$$ {1, 2}, B $$=$$ {3, 4}, then A$$\times$$B $$=$$

If $$ABC\sim PQR$$, then AB:PQ =

Let $$A=\left \{ 1, 2, 3 \right \}$$. Then number of equivalence relations containing (1, 2) is:

Let A and B be finite sets containing m and n elements respectively. The number of relations that can be defined from A and B is:

Which of the following are not equivalence relations on I?

Let R be a reflexive relation on a finite set A having n elements, and let there be m ordered pairs in R. Then:

If $$X=\left \{ 1, 2, 3, 4, 5 \right \}$$ and $$Y=\left \{ 1, 3, 5, 7, 9 \right \}$$, determine which of the following sets represent a relation and also a mapping.

Let N denote the set of all natural numbers and R a relation on $$N\times N$$. Which of the following is an equivalence relation?

Let A be a finite set containing n distinct elements. The number of relations that can be defined on A is: